@Jon D. some questions, the answers may help you better focus.1) Why did you pay your primary mortgage off in the first place?

AT MOST you rent it out for 2 years and then sell it but honestly you’re probably better off just selling it.Assuming zero vacancy and zero capex you’re going to make about $12k/yr.

GC is on the account for insurnace purposes but has no checks We write all the checks to the subs..

Lower property taxes and landlord friendly. 

my initial thoughts would be it may be a slight turn off to potential future tenants when the fire alarm goes off.

DSCR qualifies borrowers with rental income rather than personal income, so you don't need tax returns.

Investors get stuck and cannot cash out because of tax complications.

However, don't have any of those loans anymore (most paid off).The only thing I do that you don't, is use trusts, and love them and they have saved my bacon a number of times.When you said all those loans have paid off, are you utilizing other methods than Sub2 at this time?

There was some interest in starting something up but I do not think anything got off the ground. 

I’m just getting started and would love some advice on how to kick things off the right way.